Create eg_echo.sh

Author: XuhuaHuang

BashExample/eg_echo.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Commonly used commands with this file:
+# bash --version
+# cat eg_echo.sh
+# bash eg_echo.sh
+
+echo 'Executing file: '$0
+
+echo Hello, world
+
+# To get rid of the automatically inserted \n with -n flag
+echo -n 'Hello, world'
+
+# printf in Bash
+echo  # add a termination charater to compensate previous -n flag
+printf '%s = %d\n' 'Line' $LINES
+
+# - sign forces to allign to the left
+printf '%-10.10s = %5.3f\n' 'Const PI' 3.14159265359
+# without -sign, alligns to the right
+printf '%10.10s = %5.3f\n' 'Const PI' 3.14159265359